Trait sc_executor_common::wasm_runtime::WasmInstance

pub trait WasmInstance: Send {
    // Required methods
    fn call_with_allocation_stats(
        &mut self,
        method: InvokeMethod<'_>,
        data: &[u8]
    ) -> (Result<Vec<u8>, Error>, Option<AllocationStats>);
    fn get_global_const(&mut self, name: &str) -> Result<Option<Value>, Error>;

    // Provided methods
    fn call(
        &mut self,
        method: InvokeMethod<'_>,
        data: &[u8]
    ) -> Result<Vec<u8>, Error> { ... }
    fn call_export(
        &mut self,
        method: &str,
        data: &[u8]
    ) -> Result<Vec<u8>, Error> { ... }
    fn linear_memory_base_ptr(&self) -> Option<*const u8> { ... }
}

A trait that defines an abstract wasm module instance.

This can be implemented by an execution engine.

Required Methods

fn call_with_allocation_stats( &mut self, method: InvokeMethod<'_>, data: &[u8] ) -> (Result<Vec<u8>, Error>, Option<AllocationStats>)

Call a method on this WASM instance.

Before execution, instance is reset.

Returns the encoded result on success.

fn get_global_const(&mut self, name: &str) -> Result<Option<Value>, Error>

Get the value from a global with the given name.

This method is only suitable for getting immutable globals.

Provided Methods

fn call( &mut self, method: InvokeMethod<'_>, data: &[u8] ) -> Result<Vec<u8>, Error>

Call a method on this WASM instance.

Before execution, instance is reset.

Returns the encoded result on success.

fn call_export(&mut self, method: &str, data: &[u8]) -> Result<Vec<u8>, Error>

Call an exported method on this WASM instance.

Before execution, instance is reset.

Returns the encoded result on success.

fn linear_memory_base_ptr(&self) -> Option<*const u8>

Testing Only. This function returns the base address of the linear memory.

This is meant to be the starting address of the memory mapped area for the linear memory.

This function is intended only for a specific test that measures physical memory consumption.

Implementors